Constantine I AE3. 

Obv: CONSTANT-INVS MAX AVG, helmeted, laureate &  
cuirassed bust right 
Rev: VICTORIAE LAETAE PRINC PERP, two Victories 
standing facing one another, together holding shield inscribed VOT/PR in two lines on altar, with 
altar decoration Helvetica 3d (cross within wreath) 

RIC VII London 170, rated R2.

Contributed by Dane for TimeLine Originals, July, 2009.

See the "Helvetica's RIC List" of all VLPP types, in
Excel format with selectable column entries to enable
a precise identification: 
www.catbikes.ch/coinstuff/coins-ric.htm